CN102425483A - Method for improving natural gas engine compression ignition performance by adopting oxidizer - Google Patents
Method for improving natural gas engine compression ignition performance by adopting oxidizer Download PDFInfo
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- CN102425483A CN102425483A CN2011103435552A CN201110343555A CN102425483A CN 102425483 A CN102425483 A CN 102425483A CN 2011103435552 A CN2011103435552 A CN 2011103435552A CN 201110343555 A CN201110343555 A CN 201110343555A CN 102425483 A CN102425483 A CN 102425483A
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Abstract
The invention discloses a method for improving a natural gas engine compression ignition performance by adopting an oxidizer. A main-auxiliary combustion chamber structure with high compression ratio is adopted for an engine; an auxiliary combustion chamber is provided with an oxidizer injection valve; and an oxidizing additive agent is injected before the top dead center of a compression stroke, thus fuel materials in the auxiliary combustion chamber are ignited and combusted firstly, and the ignition effect of fuel mixed gas in the main combustion chamber is realized. The method disclosed by the invention has the advantages that the natural gas engine compression ignition performance can be improved greatly by adopting the oxidizer; the auxiliary combustion chamber design is easy to realize, and can be modified on the basis of the existing plurality of turbulence chamber diesel engines, the modification cost is low, and the market application scale is wide; and the combustion chamber is not only suitable for natural gas, but also suitable for other engine alternative fuels with high spontaneous ignition temperature, such as methane, hydrogen and the like, gas fuel compression ignition combustion is realized, and the starting property, economical efficiency and emission property of the engine are improved.
Description
Technical field
The present invention relates to IC Engine Design and field of combustion technology, particularly a kind of combustion system that adopts combustion improver to improve natural gas engine compression ignition performance.
Background technique
Receive the influence of factors such as China's automobile pollution significantly increases, 5 months external interdependencies of crude oil in China surpass the U.S. for the first time before 2011, and wherein 90% newly-increased crude oil demand directly disturbs the national energy security strategy from automobile industry.High-efficiency cleaning using gases fuel is as the alternative fuel of gasoline, diesel oil for this reason, and with reducing automobile industry etc. greatly to the depending on unduly of crude oil, and the combustion technology of exploitation gaseous fuel clean and effective is to promote the gaseous propellant engine key in application.The compressed natural gas proportion is the highest in the alternative fuel of having used, and the country of distribution is the widest.
Compare with spark-ignition engine, compression ignition engine has the high characteristics of compression ratio, helps improving engine thermal efficiency and fuel economy.But fuel such as compressed natural gas are because SIT is high, under usual conditions, are difficult to realize stable compression ignition burning, must as the glow plug of igniting usefulness is set, adopt insulated combustion chamber in cylinder by some special technique means.But, be applicable to that also there are a lot of difficulties in the exploitation of the higher calorific value glow plug of high self-ignition point temperature, particularly the reliability aspect of glow plug Maximum operating temperature value and long-term work does not also obviously break through, and makes apart from commercialization to remain time.Though insulated combustion chamber research from last century six the seventies just begin; Particularly a large amount of research work have been done by Texaco Oil; But high temperature equally also faces a lot of difficulties with the development of industrial ceramics and the use of the full pottery of motor; Like effective tissue of oil inflame under lubricated, the ceramic fatigue resistance of ceramic engine, the high temperature condition etc., make the advantage of adiabatic engine also not bring into play fully.
In addition; Utilize the fuel combustion supporting additive can improve the reliability of gaseous fuel compression ignition equally, utilize the perfect combustion catalizer of the some that compression stroke sprays into latter stage, because the combustion improver fire behaviour is good; At first in cylinder, form ignition source; Be equivalent to quantity and energy by the glow plug that sharply amplifies, very outstanding to improving gaseous fuel igniting reliability effect, this technology has become the focal point of each engine research and production unit.But the quantity of perfect combustion catalizer and proportion are less usually, and for guaranteeing that perfect combustion catalizer reliably catches fire, applicable elements is comparatively harsh: perfect combustion catalizer must be accomplished and air mixing before catching fire, and mixture strength satisfies ablaze needs; Cylinder temperature meets or exceeds the additive SIT.In open combustion chamber, because the bags is unified, fuel can spread rapidly after spraying into cylinder; In order before fuel diffusion, to catch fire; Must with the time for spraying of combustion improver to the compression stroke terminal point near, and this moment, in-cylinder pressure was high, for guaranteeing that perfect combustion catalizer can get into cylinder and must adopt the high-pressure injection device; Double fuel high-pressure injection device like the USWC United states west coast exploitation; Can near the compression stroke terminal point, spray compressed natural gas and combustion improver diesel oil respectively, utilize the spray angle of two kinds of fuel different, realize the reliable ignition of layering of cylinder fuel and rock gas.This fuel injection system has obtained using on American-European heavy goods vehicle, but because complex structure, price is high, is not also generally promoted.The duel fuel engine of China Weihe River bavin company exploitation utilizes the pre-combustion chamber that is provided with in the cylinder head, has realized the reliable ignition burning of big cylinder diameter natural gas engine.Because precombustion chamber inside must be provided with rock gas and diesel oil two cover fuel supplying devices; So the physical dimension of precombustion chamber is bigger; In the motor of middle-size and small-size cylinder diameter, use to be restricted, the special at present gaseous fuel compression ignition auxiliary device to middle-size and small-size machine is not also seen.To high self-ignition point gaseous fuels such as compressed natural gas, biogas, hydrogen, realize that its reliable compression ignition must explore the new combustion technology of internal-combustion engine, and combine Structure of Internal-Combustion Engine to improve and design, develop novel combustion system and could realize.
Summary of the invention
The objective of the invention is to above-mentioned technical Analysis and existing problems; A kind of method that adopts combustion improver to improve natural gas engine compression ignition performance is provided; Utilize the effect of igniting of perfect combustion catalizer in the vortex chamber; Provide than the high a lot of extrahigh energy ignition energy of common spark plug to main combustion chamber, realize natural gas engine compression ignition and rapid combustion.
Technological scheme of the present invention:
A kind of method that adopts combustion improver to improve natural gas engine compression ignition performance; Motor adopts main and auxiliary combustor's structure of high compression ratio; Subsidiary combustion chamber is provided with the combustion improver injection valve; Before compression stroke top dead center, spray perfect combustion catalizer, make the subsidiary combustion chamber fuel at first fire burns, realize the effect of igniting to main combustion chamber fuel mixed gas.
The main and auxiliary combustor of said motor; Utilize the swirl combustion chamber of S195 diesel engine; Transform the eddy current subsidiary combustion chamber, engine cylinder covers to be provided with and is used to install the mounting hole of combustion improver injection valve and communicates with subsidiary combustion chamber, between main combustion chamber and subsidiary combustion chamber, adopts the swirl-chamber insert that is provided with penetrating via simultaneously; The position of combustion improver injection valve mounting hole is identical with the position of former glow plug; The angle of the center line of mounting hole and the vertical center line of subsidiary combustion chamber is 60 degree, and combustion improver injection valve mounting hole top is diameter 12mm, long 18mm cylinder type tapped hole, and the bottom is a diameter 7.5mm cylindrical hole; The cylindrical hole and the subsidiary combustion chamber of bottom connect, and the combustion improver injection valve is connected through thread seal with combustion improver injection valve mounting hole; The swirl-chamber insert external form is stepped cylindrical structure; Cylindrical body by three different-diameters constitutes, and three cylindrical bodys are respectively high 6.5mm, diameter 36mm from top to bottom, high 8mm, diameter 32mm and high 8mm, diameter 40mm; The swirl-chamber insert inside center be provided with the cylindrical hole at top and the hemisphere type vortex chamber that communicates with it at the bottom of; The cylindrical hole diameter at top is 30mm, high 4mm, and the diameter at the bottom of the hemisphere type vortex chamber is 26mm, and the swirl-chamber insert base is provided with two circular hole passages; One of them circular hole passage is for starting the hole, under its center line end distance insert vertical center line lower end 15mm, with the angle of the vertical center line of inserting be that 30 degree, diameter are 3mm, another circular hole passage is vortex chamber's passage; Under its center line end distance insert vertical center line lower end 7mm, with the angle of vertical center line inserted be that 40 degree, diameter are 8-12mm, swirl-chamber insert and engine cylinder cover are fixed through interference fit.
The compression ratio of said motor is 19-21.
Said combustion improver is cyclohexane or di-tert-butyl peroxide, the jet pressure 5.5MPa of perfect combustion catalizer, and air feed quantity is opened the endurance at the 30-60 Shaft angle of writing music in injection valve.
Said combustion improver injection valve is the SP serial gas injection valve that the red magnificent company in Guizhou produces; The combustion improver that is sprayed by the combustion improver injection valve is cyclohexane or di-tert-butyl peroxide; The jet pressure 5.5MPa of combustion improver, air feed quantity is opened the endurance at the 30-60 Shaft angle of writing music in injection valve.
Technical Analysis of the present invention:
The internal combustion engine process comprises breathing process, compression process, the work by combustion of catching fire process and exhaust process, totally 4 processes.The vitals of common internal-combustion engine acting unit is the firing chamber, and the firing chamber is made up of the space that cylinder type cylinder sleeve inboard, piston head and cylinder cap bottom surface are surrounded, and the cylinder sleeve top is a cylinder head, and piston is reciprocating in cylinder sleeve.Piston is motion from top to bottom in cylinder sleeve, ambient air is sucked be suction stroke; Piston moves inhaled air boil down to compression stroke from bottom to top; The compression stroke terminal point sprays into fuel and is realizing fire burns, and the high temperature and high pressure gas that is produced promotes piston and moves downward external acting, is called the work by combustion stroke that catches fire; The waste gas that burning back produces is called exhaust stroke by the piston release cylinder that moves from bottom to top.
Fuel is realized the condition of compression ignition, and fuel realizes that in cylinder the compression ignition burning must possess several conditions simultaneously: fuel and Air mixing gas concentration are suitable before catching fire; The temperature of compression terminal point surpasses the self-ignition point of mixed gas in the cylinder.Mixture strength distributes and receives chamber structure before catching fire, and air motion and the spray regime of fuel in the firing chamber in the cylinder are like influences such as injection direction and time for spraying.The temperature of compression terminal point depends on the parameters such as compression ratio of motor.
Summary of the invention comprises chamber structure design and combustion improver.Reliable compression ignition for high SIT fuel such as assurance rock gases; The swirl combustion chamber structure is adopted in design, and the firing chamber comprises the main combustion chamber that formed by piston head and cylinder cap bottom and bottom cylinder cap and away from the ball-type vortex chamber of cylinder centerline place setting.The combustion improver injection apparatus is set in subsidiary combustion chamber; Before the compression terminal point, spray into combustion improver; The characteristics of utilizing the bags to separate; Effectively stop that therefore combustion improver can guarantee under the situation that adds the minute quantity combustion improver to the diffusion of main combustion chamber before in-cylinder combustion occurs, the mixture strength of the combustion improver that subsidiary combustion chamber is interior still can satisfy the needs of himself compression ignition.Simultaneously; Combustion improver spray into constantly suitably that tripping contracts the final position far, this moment is because under the position of the relative cylinder sleeve of piston leans on, the interior pressure of cylinder is lower; Help combustion improver and realize low-pressure fuel injection, reduce technical requirements and manufacture cost greatly the combustion improver injection apparatus.Can effectively improve the reliable compression ignitions of high self-ignition point fuel in cylinder of internal-combustion engine such as compressed natural gas, hydrogen or biogas through this covering device, realize the high-efficiency cleaning burning of gaseous fuel.
The key technology of the combustion system of said raising natural gas engine compression ignition performance is: the 1) selection of the volume ratio of engine compression ratio and vortex chamber; 2) compressed natural gas and the layout of combustion improver injection apparatus in the vortex chamber; 3) design of swirl-chamber insert passage comprises angle, size, the quantity of passage; 4) time for spraying of combustion improver, value volume and range of product.
Above-mentioned measure is an integral body, and rock gas compression ignition and combustion process are had mutual restriction.There is optimal case, promptly exists best parameter to select.The designed engines compression ratio is the involuntary ignition that satisfies perfect combustion catalizer for the temperature that guarantees the compression terminal point.Design main and auxiliary combustor volume ratio is for guaranteeing in the concubine that the mixed gas laggard ignition energy of becoming owner of enforcement that catches fire satisfies main chamber's natural gas fired energy requirement.Design subsidiary combustion chamber parameter is to be retained in concubine to greatest extent after spraying in order to ensure combustion improver, and with concubine in air mixing, form the equivalent proportion inflammable mixture as early as possible and realize igniting.Design main combustion chamber parameter is for the passage of inserting with subsidiary combustion chamber is complementary, and makes the flame of subsidiary combustion chamber internal combustion get into main combustion chamber with the energy loss of minimum, realizes the reliable ignition and the rapid combustion of rock gas and air Mixture in the main combustion chamber.Selecting the kind of combustion improver, is that the parameter of compression ratio, volume ratio and main and auxiliary combustor according to motor is confirmed, to guarantee its at first reliable ignition.Design combustion improver nozzle parameter can be realized under the minimum condition of use amount, guarantees the combustion improver reliable ignition and produces sufficiently high energy, the rock gas air Mixture in the main combustion chamber that ignites.Active like the combustion improver chemical property, then the time for spraying of combustion improver can be more late, and under the assurance combustion improver reliably caught fire prerequisite, the compression ratio of motor can be littler, to reduce compression work and to help fuel-air to mix.The channel size of inserting is big more, and throttling is little, and the temperature of subsidiary combustion chamber compression terminal point is high more; Favourable fuel fire; But the big concubine fuel that increases easily of channel size spreads in the forward direction main chamber that catches fire, and causes that the concentration stratification effect weakens in its cylinder, it's rare being unfavorable for again possibly cause to past mixed gas and catch fire.
Advantage of the present invention is: adopt combustion improver can improve natural gas engine compression ignition performance greatly, the subsidiary combustion chamber design is easy to realize that can convert on existing a large amount of swirl chamber diesels basis on the market, the repacking cost is low, and the application market scale is wide; This combustion system is not only applicable to rock gas, also applicable to the engine replacing fuel of other high self-ignition points, like biogas, hydrogen etc., realizes the burning of gaseous fuel compression ignition, improves engine startability, Economy and emission performance.
Description of drawings
Fig. 1 is engine cylinder cover, subsidiary combustion chamber and swirl-chamber insert structural representation.
Among the figure: 1. engine cylinder cover 2. combustion improver injection valves 3. combustion improver injection valve mounting holes
4. subsidiary combustion chamber 5. main combustion chambers 6. swirl-chamber inserts 7. cylindrical holes
8. 9. startup holes, 10. vortex chamber's passages at the bottom of the hemisphere vortex chamber.
Embodiment
Embodiment:
A kind of method that adopts combustion improver to improve natural gas engine compression ignition performance; Motor adopts main and auxiliary combustor's structure of high compression ratio; Subsidiary combustion chamber is provided with the combustion improver injection valve, before compression stroke top dead center, sprays perfect combustion catalizer, make the subsidiary combustion chamber fuel at first fire burns; Realization is to the effect of igniting of main combustion chamber fuel mixed gas, and concrete measure is following:
1) utilizes the swirl combustion chamber of S195 diesel engine, transform the eddy current subsidiary combustion chamber
Designing natural gas suction port; So that the combustion improver injection valve is installed, the gas fuel injection valve, engine cylinder cover, subsidiary combustion chamber and insert structure are as shown in Figure 1; Engine cylinder cover 1 is provided with and is used to install the mounting hole 3 of combustion improver injection valve 2 and communicates with subsidiary combustion chamber 4; Be provided with the swirl-chamber insert 6 of penetrating via simultaneously in 4 employings of main combustion chamber 5 and subsidiary combustion chamber, the position of combustion improver injection valve mounting hole 3 is identical with the position of former glow plug, and the angle of the vertical center line of the center line of mounting hole 3 and subsidiary combustion chamber 4 is 60 degree; Combustion improver injection valve mounting hole 3 tops are diameter 12mm, long 18mm cylinder type tapped hole; The bottom is a diameter 7.5mm cylindrical hole, and the cylindrical hole and the subsidiary combustion chamber of bottom connect, and the combustion improver injection valve is connected through thread seal with combustion improver injection valve mounting hole; Swirl-chamber insert 6 external forms are stepped cylindrical structure; Cylindrical body by three different-diameters constitutes, and three cylindrical bodys are respectively high 6.5mm, diameter 36mm from top to bottom, high 8mm, diameter 32mm and high 8mm, diameter 40mm; Swirl-chamber insert 6 inside center be provided with the cylindrical hole 7 at top and the hemisphere type vortex chamber that communicates with it at the bottom of 8; Cylindrical hole 7 diameters at top are 30mm, high 4mm, and 8 diameter is 26mm at the bottom of the hemisphere type vortex chamber, and swirl-chamber insert 6 bases are provided with two circular hole passages; One of them circular hole passage is for starting hole 9, under its center line end distance insert vertical center line lower end 15mm, with the angle of the vertical center line of inserting be that 30 degree, diameter are 3mm, another circular hole passage is vortex chamber's path 10; Under its center line end distance insert vertical center line lower end 7mm, with the angle of vertical center line inserted be that 40 degree, diameter are 8mm, swirl-chamber insert 6 and engine cylinder cover 1 are fixed through interference fit.
Upper channel size and the aspect effect state that mixed gas air-flow motion state in the apical areola and the back flame that catches fire effluents that catches fire of inserting, rapid combustion has material impact to main combustion chamber.The injection valve mounting hole of rock gas and perfect combustion catalizer must be complementary with the channel size and the direction of swirl-chamber insert.Visible by aforesaid passage inclination angle; The interior air motion of subsidiary combustion chamber is for counterclockwise before catching fire; Theoretical and the correlation test research according to combustion in IC engine, should arrange the perfect combustion catalizer injection valve to arrange the natural gas injection valve more in the counterclockwise direction earlier is the best design that guarantees burning quality.
2) select engine compression ratio and perfect combustion catalizer
According to the compression ignition engine working principle, engine compression ratio is to influence the important parameter that fuel pressure crouches the bad temper ability, and compression ratio numerical value is big; Compression terminal temperature is high; Fuel is being realized fire burns easily, but excessive compression ratio can consume more mechanical work, and influences cylinder fuel and motion and the mixing quality of air before catching fire; For this reason, should select suitable compression ratio according to different fuel physics and chemical property.Among this embodiment, the compression ratio of compression ignition natural gas engine is chosen to be 20.
The selection of perfect combustion catalizer should adapt with engine compression ratio, guarantees that the temperature of compression terminal point can be higher than the SIT of perfect combustion catalizer, and heat is higher than the activation energy of perfect combustion catalizer in the cylinder of compression terminal point, guarantees reliable the fire burns of perfect combustion catalizer.Among this embodiment, said combustion improver is cyclohexane or di-tert-butyl peroxide, the jet pressure 5.5MPa of perfect combustion catalizer, and air feed quantity is opened the endurance at the 30-60 Shaft angle of writing music in injection valve.
3) confirm the nozzle parameter of rock gas
The natural gas injection parameter comprises time for spraying, sprays quantity, jet pressure etc.Definite natural gas injection moment in-cylinder pressure that must guarantee of jet pressure is lower than gas pressure, is beneficial to rock gas and pours.It is corresponding with engine load to spray quantity, to guarantee stabilization of speed.Time for spraying is the important parameter that influences mixed gas branch in the cylinder.Time for spraying more early, in-cylinder mixture strength branch is even more, is unfavorable for the mixture strength layered arrangement; At the engine compresses starting period that catches fire, quantity of fuel is few, and mixed gas evenly distribution can make mixture strength rare excessively; Exceed inflammability limit, occur catching fire, so should delay the moment that rock gas begins to spray as far as possible; Make main and auxiliary combustor mixture strength different (concentration stratification), guarantee that subsidiary combustion chamber concentration in theoretical equivalent proportion scope, is convenient to compression ignition.
Among this embodiment; The natural gas injection valve is the SP serial gas injection valve that the red magnificent company in Guizhou produces, and the rock gas of injection 150 is write music and sprayed in the Shaft angle scope before compression top center, and jet pressure is 6.5Mpa; Air feed quantity is opened the endurance with injection valve and is counted 60-180 and write music in the Shaft angle scope; Select rock gas 150 degree before compression top center to spray, jet pressure 6.5Mpa is optimum scheme.
Through engine pedestal actual measurement, above-mentioned embodiment can guarantee the natural gas engine startup of normally catching fire.
Claims (5)
1. method that adopts combustion improver to improve natural gas engine compression ignition performance; It is characterized in that: motor adopts main and auxiliary combustor's structure of high compression ratio; Subsidiary combustion chamber is provided with the combustion improver injection valve; Before compression stroke top dead center, spray perfect combustion catalizer, make the subsidiary combustion chamber fuel at first fire burns, realize the effect of igniting to main combustion chamber fuel mixed gas.
2. improve the method for natural gas engine compression ignition performance according to the said employing combustion improver of claim 1; It is characterized in that: the main and auxiliary combustor of said motor; Utilize the swirl combustion chamber of S195 diesel engine; Transform the eddy current subsidiary combustion chamber, engine cylinder covers to be provided with and is used to install the mounting hole of combustion improver injection valve and communicates with subsidiary combustion chamber, between main combustion chamber and subsidiary combustion chamber, adopts the swirl-chamber insert that is provided with penetrating via simultaneously; The position of combustion improver injection valve mounting hole is identical with the position of former glow plug; The angle of the center line of mounting hole and the vertical center line of subsidiary combustion chamber is 60 degree, and combustion improver injection valve mounting hole top is diameter 12mm, long 18mm cylinder type tapped hole, and the bottom is a diameter 7.5mm cylindrical hole; The cylindrical hole and the subsidiary combustion chamber of bottom connect, and the combustion improver injection valve is connected through thread seal with combustion improver injection valve mounting hole; The swirl-chamber insert external form is stepped cylindrical structure; Cylindrical body by three different-diameters constitutes, and three cylindrical bodys are respectively high 6.5mm, diameter 36mm from top to bottom, high 8mm, diameter 32mm and high 8mm, diameter 40mm; The swirl-chamber insert inside center be provided with the cylindrical hole at top and the hemisphere type vortex chamber that communicates with it at the bottom of; The cylindrical hole diameter at top is 30mm, high 4mm, and the diameter at the bottom of the hemisphere type vortex chamber is 26mm, and the swirl-chamber insert base is provided with two circular hole passages; One of them circular hole passage is for starting the hole, under its center line end distance insert vertical center line lower end 15mm, with the angle of the vertical center line of inserting be that 30 degree, diameter are 3mm, another circular hole passage is vortex chamber's passage; Under its center line end distance insert vertical center line lower end 7mm, with the angle of vertical center line inserted be that 40 degree, diameter are 8-12mm, swirl-chamber insert and engine cylinder cover are fixed through interference fit.
3. improve the method for natural gas engine compression ignition performance according to the said employing combustion improver of claim 1, it is characterized in that: the compression ratio of said motor is 19-21.
4. improve the method for natural gas engine compression ignition performance according to the said employing combustion improver of claim 1; It is characterized in that: said combustion improver is cyclohexane or di-tert-butyl peroxide; The jet pressure 5.5MPa of perfect combustion catalizer, air feed quantity is opened the endurance at the 30-60 Shaft angle of writing music in injection valve.
5. improve the method for natural gas engine compression ignition performance according to the said employing combustion improver of claim 1; It is characterized in that: said combustion improver injection valve is the SP serial gas injection valve that the red magnificent company in Guizhou produces; The combustion improver that is sprayed by the combustion improver injection valve is cyclohexane or di-tert-butyl peroxide; The jet pressure 5.5MPa of combustion improver, air feed quantity is opened the endurance at the 30-60 Shaft angle of writing music in injection valve.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110578597A (en) * | 2014-07-14 | 2019-12-17 | 温特图尔汽柴油公司 | Prechamber bottom part, prechamber, cylinder arrangement and related method |
US11828220B1 (en) * | 2022-12-30 | 2023-11-28 | Saudi Arabian Oil Company | Active pre-chamber jet-assisted H2 multi-mode combustion |
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DE4140071A1 (en) * | 1991-12-05 | 1993-06-09 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Air-compressing fuel injection engine using methanol - has small pilot fuel volume injected shortly before main volume, while ignition assistance device is active |
CN1605727A (en) * | 2004-11-16 | 2005-04-13 | 天津大学 | Combustion system of compressed ignition gaseous propellant engine and composite air supply method thereof |
CN101482051A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Multichannel swirl combustion chamber |
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- 2011-11-04 CN CN2011103435552A patent/CN102425483B/en not_active Expired - Fee Related
Patent Citations (5)
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US4122805A (en) * | 1976-08-02 | 1978-10-31 | General Motors Corporation | Diesel engine combustion chambers |
US4368702A (en) * | 1979-01-13 | 1983-01-18 | Klockner-Humboldt-Deutz Aktiengesellschaft | Method of operating an air-compressing, self-igniting internal combustion engine |
DE4140071A1 (en) * | 1991-12-05 | 1993-06-09 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Air-compressing fuel injection engine using methanol - has small pilot fuel volume injected shortly before main volume, while ignition assistance device is active |
CN1605727A (en) * | 2004-11-16 | 2005-04-13 | 天津大学 | Combustion system of compressed ignition gaseous propellant engine and composite air supply method thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110578597A (en) * | 2014-07-14 | 2019-12-17 | 温特图尔汽柴油公司 | Prechamber bottom part, prechamber, cylinder arrangement and related method |
CN110578597B (en) * | 2014-07-14 | 2021-07-06 | 温特图尔汽柴油公司 | Pre-combustion chamber, cylinder arrangement and related method |
US11828220B1 (en) * | 2022-12-30 | 2023-11-28 | Saudi Arabian Oil Company | Active pre-chamber jet-assisted H2 multi-mode combustion |
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